wupdater.exe has nothing to do with Windows Update. It is spyware, which should be detected and removed by a program such as Ad-Aware or Spybot.
You should remove it.

If you can not remove wupdater.exe (because you can not locate it, or it is in use), download Security Task Manager.
This program can kill the process, delete or quarantine this file, or just list all security related information about this file and all other running background processes.

Very dangerous. Invades your privacy. Comes with IncrediFind Search BHO Utility. I have been having trouble removing this, although I HAVE identified what it is. Any help would be appreciated. InsecureStix

is an attractant for more dangerouse spyware - Get rid of it NOW! Bob

I got with theme download, undisclosed bundle, wanted to install some freeware stuff, i declined, it then wanted to connect, which firewall prompted me, to which i also declined, install failed at that point, just cleaned right now with Spybot S&D, also had association with Freeze, i wanted the KC Chiefs theme, which found out was bad! See also: LinkMatthew

Hijacked my browser along with 3 other spyware programmes. Nick

This is spyware. Seann

it stops me from downloading some software joe

The exe hangs my iexpolrer every time. As soon a you kill it in the Task Manager every thing working fine again. Mojo

My own software does not start if wudater is running. DigiMode

It stinks, it invaded two of my computers, I got it from AOL and it slowed down both computers. Cynthia

found it in windows/prefetch by using windows search look in hidden areas and by text in file instead of file name. drag the containing file into the C:\ path and delete with command prompt also delete all .pf files and text files cotaining the name of the file then restart and see if u got it all. check w task manager.

slows the setup process. seems related to spyware Abigaba Herbert

Browser hijacker, it updates automatically without knowledge or consent of user. Eliza

my application softwares can't open because of this especially pagemaker Marcelino Tan

Messed my PC up it made simple things like run not work and when u open internet explorer it loads more processes, If you have got this file i recommend you to Spyware Scan,Anti-Virus Scan,Trojan Scan cause my PC was clean soon as i got this it messed up. Recommend Spyware Doctor or Adware SE Nathan Kent

Microsoft's Use interface, (UI), used to view and explore windows. Nbordeau

This file eat much of your resources. waduba

I consider it definitely as malware. Xiaogang Guo

Its an microsoft service, wich updates the OS David Schrempf

Very hard to remove Dugba

It added 20 copies of itself to Windows Firewall and hijacked my old Windows XP. TL;DR: It is bad. Austin

Eats up the computer. Clean it with Spybot joh

This is known as a RAT or Remote Administrative Tool; a Trojan installed on your computer which gives the hacker full access to your entire computer, settings, files, and more. Scan this with Spybot Search and Destroy, as its not damaging, but invades your personal Computer. See also: LinkJesusOfDC

Update about wupdater.exe for Window 7. The malware/spyware stucks Internet Explorer and FireFox browsers. Google Chrome is more safe for some protections but also compromised. The malware stucks also Second Life viewers. wupdater.exe is a malware by White Sea Media (do not visit the web page of it). The malware is allocated in: C:\Users\*name of user*\AppData\Local\Temp\wupdater.exe. The antivirus Avira Control Center does not find it as virus. You must put the exe file in quarantine but it is still in the unknow folder of registry. The subfolder Run, HKEY_LOCAL_MACHINE is not findable. Davide

When you give CONFIRM program turns - I do not know what it is, anyway, the process of "live", but after an hour it will prompt you to re-confirmed when you reject you again after about an hour invite you to a patch / confirmed by demented + certainly will not be safe for deletion "wupdater.exe" after a while again restores a file is there again! Jarda

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Is wupdater.exe spyware or a virus, trojans, adware or worm? Is there a known wupdater.exe error?